Fumes in Cabin - Page 2 - Mercedes-Benz Forum
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post #11 of 17 (permalink) Old 05-12-2019, 05:56 AM
ot1
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Originally Posted by mtrevelino View Post
ok, just to bring everyone up to date on this and to close this out. One month and 1,500 miles ago, I replaced the oil separator with a Viaco brand oil separator. The oil smell decreased by at least half immediately. During the following weeks and finally today, I can say the smell is completely gone.

I stopped by my indie and spoke to him a couple of weeks ago while the smell was still there. He said that the first thing he would have checked was the oil separator. I stopped again this morning and told him the smell was completely gone. He said that when I changed the oil separator and without thoroughly cleaning the system, that it could take a week or two for everything to resume to normal. He said that there could have been oil stuck in places it should not have been, and took time to clear.

Anyway, that is my story. Thanks for those that offered suggestions.

Mike T.
Do you have the part number for the oil separator?
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post #12 of 17 (permalink) Old 05-12-2019, 07:51 AM Thread Starter
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Originally Posted by ot1 View Post
Do you have the part number for the oil separator?
Here is a quick internet search:
https://www.google.com/search?client...=mb+6460101462

I got mine from rmeuropean.com under this part number:
6460101462-MFG604

I paid $122 for it. It looks like they are out of stock, but their price is $78.

Mike T.
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post #13 of 17 (permalink) Old 05-13-2019, 02:19 PM
ot1
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Quote:
Originally Posted by mtrevelino View Post
Here is a quick internet search:
https://www.google.com/search?client...=mb+6460101462

I got mine from rmeuropean.com under this part number:
6460101462-MFG604

I paid $122 for it. It looks like they are out of stock, but their price is $78.

Mike T.
Thanks for the part number, mercedes calls it an oil drip pan, ECS does call it an oil separator, but doesnt show up under 06 e320, a search wihout the part number in the parts houses was frustrating,

Last edited by ot1; 05-13-2019 at 02:22 PM.
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post #14 of 17 (permalink) Old 06-12-2019, 03:32 AM
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It seems like you have solve the smell problem with the oil separator.

Other smell are The fuel filter connections tend to leak. I used a larger o-ring to stop the leak from the sensor. Hose was also leaking, replaced.

If oily smell, the oil drops on the dfp or exhaust that is right under HVAC air filter in the right side/firewall engine compartment.
A terrible design.
IND Mechanic said lower oil pan $400. replaced but that was not source of the leak.
Then said upper oil pan. $1000 job.
Another IND said upper oil pan was definitely not the source, but could not locate the source.
Oil in the bell housing, so rear main seal or draining from the oil cooler.

2009 bluetec with 110,000 miles. Had turbo, flapper motor, front wheel bearings and glow plug relay replaced. Seems to need alot of repairs.
The oil leak is splashing even to the alternator and could short out some computer and sensor. Half to 1 liter oil loss per 6,000 mile. AT-200 leak stop didn't work or made it worse.

Question:
Pull the engine and fix both of them at same time ($2500?) or just use until it dies?
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post #15 of 17 (permalink) Old 06-12-2019, 04:57 AM Thread Starter
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Sorry, I cannot help you with your bluetec motor. Replacing my oil separator on my cdi did fix the cabin fumes, but I have a small oil leak where oil is puddling along the ridge of the separator. I have wiped it down and will try to pinpoint the leak. I think it may be coming from the hose that goes into the front of the separator.
Mike T.
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post #16 of 17 (permalink) Old 06-12-2019, 07:21 AM
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The connection of that hose to the air tube tends to leak. I wipe off all the oil with isopropyl alcohol. Add some water for a temporary lube to fit it snuggle. Same for the air tube to the turbo. Connected to unbolted air filter box. Fit, tighten to turbo, then final bolt down air filter box.
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post #17 of 17 (permalink) Old 06-12-2019, 02:07 PM Thread Starter
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Originally Posted by dave84_300d View Post
The connection of that hose to the air tube tends to leak. I wipe off all the oil with isopropyl alcohol. Add some water for a temporary lube to fit it snuggle. Same for the air tube to the turbo. Connected to unbolted air filter box. Fit, tighten to turbo, then final bolt down air filter box.
Thanks! I will give it a good cleaning and maybe put a hose clamp on it.
Mike T.
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